What 𝜅 means
The formula tells you what quantity it names.
Greek kappa began as an alphabet letter for the /k/ sound, adapted from Phoenician kaph. In math, italic styling can distinguish one variable from another; it carries notation meaning, not decoration.
Part of collections
Don't confuse it with
1
Related characters
1
More like this
10
How to type or find 𝜅
- Search it as
- κ · kappa math · kappa latex · curvature symbol · greek k · italic kappa · thermal conductivity · dielectric constant
- Shows up in
- Anything that takes text · its shape is whatever your font draws
Windows (Word)
Windows
macOS
HTML
𝜅CSS
\1D705Hex input
In a Unicode-aware editor, enter 1D705 through its hexadecimal-character input.
LaTeX
Use \kappa in math mode to typeset kappa in the selected math font; it is a command, not this literal Unicode character.
Why is 𝜅 a box on my screen?
fsymbols draws rare signs with its own fonts, so they show here even where your device has none. An app or website without such a font shows an empty box (□) or a question mark instead. Turn our fonts off to see each sign as your device draws it by itself: a box here means a box in your chats and documents too.
Codes and encoding1 code points
HTML decimal
𝜅
HTML hex
𝜅
CSS content
content: "\1D705";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%9D%9C%85
1
On screen
1
Code points
2
JS .length
4
UTF-8 bytes
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.